Question about size for Grid Tie inverter

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  • mfacen
    Junior Member
    • Aug 2010
    • 1

    #1

    Question about size for Grid Tie inverter

    I have a basic question:

    I want to install a grid tie inverter in my house, the power rating of the grid tie inverter in watts is the maximum power I can run in my house or being connected to the grid I can run bigger loads than the inverter can handle ?

    I don't know if it is clear, for ex:
    If a grid tie inverter is rated 2000 Watts can I have 3000 watts load ( for a short period of time) if I'm connected to the grid ?

    So my question: is the power rating of the inverter the maximum load I can have in the house or it is the maximum load that the inverter can create from the PV array ?
  • Sunking
    Solar Fanatic
    • Feb 2010
    • 23301

    #2
    Originally posted by mfacen
    If a grid tie inverter is rated 2000 Watts can I have 3000 watts load ( for a short period of time) if I'm connected to the grid ? [
    No the inverter size has nothing to do with the maximum size load you can have. Your electric dryer, Hot water heater, oven, and air conditioner all use more than 2000 watts each.

    If your demand exceeds what your inverter can supply, you take from the utility. When your production exceeds your demand, the power goes out on the grid for someone else to use. Otherwise how do you think anything works at night?
    MSEE, PE

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    • dzsolar

      #3
      Originally posted by mfacen
      I have a basic question:

      I want to install a grid tie inverter in my house, the power rating of the grid tie inverter in watts is the maximum power I can run in my house or being connected to the grid I can run bigger loads than the inverter can handle ?

      I don't know if it is clear, for ex:
      If a grid tie inverter is rated 2000 Watts can I have 3000 watts load ( for a short period of time) if I'm connected to the grid ?

      So my question: is the power rating of the inverter the maximum load I can have in the house or it is the maximum load that the inverter can create from the PV array ?
      though i am not familiar with technoloy questions, however we don't think that you can use 3000W electric load in a on-grid system with 2000W inverter. in addition, when you use AC load, you should also make sure the total power of AC load is not above 2000W. this is only my suggestion!

      Comment

      • russ
        Solar Fanatic
        • Jul 2009
        • 10360

        #4
        @ mfacen - Welcome to Solar Panel Talk - The place to learn about solar PV and solar thermal.

        If at first you don't understand an answer or reply please ask again - possibly with additional information to assist in getting your answer.

        Russ
        [SIGPIC][/SIGPIC]

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